US4916440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for inputting numerical or alphanumerical data, respectively into an apparatus
Assignee: Fresenius SE and Co KGaA
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Filing: 1988-07-26
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Granted: 1990-04-10
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Expires: 2008-07-26
Abstract
Abstract The tapped voltage representing the displacement and duration of a potentiometer in a joystick-type actuating element is applied to an analog to digital converter and the converted digital value is fed to preset inputs of a presettable digital counter which is set at its counting inputs by a clock generator. The overflow output of the presettable counter is connected to a load input of the presettable counter and to an up/down counter which controls a display or the like via decoding and driver circuits. A subtracting circuit is provided to subtract a preselected value from the converted digital value in order to provide a dead zone for a preselected range of the potentiometer.
Inventors
- 👤 Ulrich Faeser
- 👤 Hans-Dietrich Polaschegg
- 👤 Dieter Mahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:22
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/0362; G06F3/0383
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
135 words
Device for inputting alphanumeric data into an apparatus, in particular into medical electromechanical apparatuses comprising circuit means for changing inputted data as a function of the value and the direction of the displacement of a resistive input element having a tap with said tap being connected to an analog/digital converter and a digital circuit connected to said converter, said circuit means comprising (a) a presettable counter (22) having connected its presetting inputs to the output of said analog/digital converter (16) via a subtracting circuit (18), its counting input to a clock generator (24) and its overflow output to a load input of said presettable counter (22); and (b) an up/down counter (26) being connected to the overflow output of said presettable counter (22) and controlling via decoding and driver circuits (28, 30) a display (32).
Claim 2
Dependent Claim
135 words
Device for inputting alphanumeric data into an apparatus, in particular into medical electromechanical apparatuses comprising circuit means for changing inputted data as a function of the value and the direction of the displacement of a resistive input element having a tap with said tap being connected to an analog/digital converter and a digital circuit connected to said converter, said circuit means comprising (a) a presettable counter (22) having connected its presetting inputs to the output of said analog/digital converter (16) via a subtracting circuit (18), its counting input to a clock generator (24) and its overflow output to a load input of said presettable counter (22); and (b) an up/down counter (26) being connected to the overflow output of said presettable counter (22) and controlling via decoding and driver circuits (28, 30) a display (32).
Claim 3
Dependent Claim
87 words
Device for inputting alphanumeric data into an apparatus in particular into medical electromechanical apparatuses, comprising circuit means for changing inputted data as a function of the value and the direction of the displacement of a resistive input element having a tap, wherein (a) the tap (12) is connected via a dead zone member (34) and a rectifier (36) to a voltage/frequency converter (VCO-40); and (b) the voltage/frequency converter (VCO-40) is coupled to an up/down counter (44) which controls via decoding and driver circuits (46) a display (48).
Claim 4
Dependent Claim
87 words
Device for inputting alphanumeric data into an apparatus in particular into medical electromechanical apparatuses, comprising circuit means for changing inputted data as a function of the value and the direction of the displacement of a resistive input element having a tap, wherein (a) the tap (12) is connected via a dead zone member (34) and a rectifier (36) to a voltage/frequency converter (VCO-40); and (b) the voltage/frequency converter (VCO-40) is coupled to an up/down counter (44) which controls via decoding and driver circuits (46) a display (48).
Claim 5
Dependent Claim
47 words
Device according to claim 1, characterized in that said subtracting circuit (CPU-18) serves to subtract from each converted digital value a predetermined digital value in order to provide a dead zone in which the displacement of the resistive input element results in no change of the display.
Claim 6
Dependent Claim
34 words
Device according to claim 2, characterized by means (42) for evaluating the sign of the tapped voltage with the output of said means being connected to a direction input of said up/down counter (44).
Claim 7
Dependent Claim
30 words
Device according to claim 4, characterized by means (38) arranged between the rectifier (36) and the voltage/frequency converter (VCO-40) for providing a non-linear behaviour of the tapped and rectified voltage.
Claim 8
Dependent Claim
25 words
Device according to claim 3, characterized in that the subtracting circuit (CPU-18) further provides a sign signal to direction input of said up/down counter (26).
Claim 9
Dependent Claim
33 words
Device according to claim 3, wherein the presettable counter (22), the clock generator (24), the analog/digital counter (16), the up/down counter (26) and the subtracting circuit (CPU-18) are integrated in a microprocessor (20).
Claim 10
Dependent Claim
23 words
Device according to claim 5, characterized by accordingly wired-up operational amplifiers for implementing the rectifying function, the sign function and the non-linear function.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |